//: io/UsingRandomAccessFile.java
package com.dozy.learn.io;

import java.io.*;

public class UsingRandomAccessFile {
    static String file = "bin\\rtest.dat";

    static void display() throws IOException {
        RandomAccessFile rf = new RandomAccessFile(file, "r");
        for (int i = 0; i < 7; i++)
            System.out.println("Value " + i + ": " + rf.readDouble());
        System.out.println(rf.readUTF());
        rf.close();
    }

    public static void main(String[] args) throws IOException {
        RandomAccessFile rf = new RandomAccessFile(file, "rw");
        for (int i = 0; i < 7; i++)
            rf.writeDouble(i * 1.414);
        rf.writeUTF("The end of the file");
        rf.close();
        display();
        rf = new RandomAccessFile(file, "rw");
        rf.seek(5 * 8);
        rf.writeDouble(47.0001);
        rf.close();
        display();
    }
} /* Output:
Value 0: 0.0
Value 1: 1.414
Value 2: 2.828
Value 3: 4.242
Value 4: 5.656
Value 5: 7.069999999999999
Value 6: 8.484
The end of the file
Value 0: 0.0
Value 1: 1.414
Value 2: 2.828
Value 3: 4.242
Value 4: 5.656
Value 5: 47.0001
Value 6: 8.484
The end of the file
*///:~
